A group of middle school students have worn large green buttons on their jackets to protest government failure to clean up a polluted site near the school. The principal told them to remove the buttons, and they refused. The principal suspended the students for a week.

In Tinker v. Des Moines School District, the Supreme Court ruled that students retain their First Amendment rights at school, including the right to wear symbolic items to express a political view, unless their expression substantially disrupts school activities. The green buttons are symbolic protest, so this situation matches Tinker. Engel involved school prayer, Griswold involved privacy and contraception, and Miranda involved rights during police questioning.

AI-written and checked against the verified answer.